Tamiflu safety

We had an appt with our GI today and she felt my DD has some viral flu and has prescribed tamiflu.

I looked at the side effects and one of the rare side effect is bloody diarrhea. Has anyone used this?

the outer limit for tamiflu effectiveness is 48 hours after onset of illness.

From WebMD: "Tamiflu can decrease the duration of illness by 30% to 40%, and decrease flu severity by about 40% -- but only if taken in the first 36 to 48 hours of illness." www.webmd.com/cold-and-flu/news/20121114/does-tamiflu-work-questions-continue

For example, my 12 year old had a sore throat for a couple of days that we thought nothing of. On the 3rd day she developed a mild fever and was sent home from school. We took her to her pediatrician, who swabbed her nose for influenza. She tested positive. A couple of hours later we picked up Tamiflu from the pharmacy and she started the medication. Two days later she was completely fine, without even a cough.

My daughter had the flu vaccine in September. This year's vaccine is not very effective, but might have also contributed to her very mild case.